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Crotalus is a genus of venomous pit vipers in the family Viperidae, commonly known as rattlesnakes or rattlers. The genus is found only in the Americas from southern Canada to northern Argentina. The generic name Crotalus is derived from the Greek word κρόταλονkrótalοn, which means "rattle" or "castanet", and refers to the rattle on the end of the tail, which makes this group so distinctive. As of July 2023, 44 to 53 species are recognized as being valid.
Snake venom is a highly toxic saliva containing zootoxins that facilitates in the immobilization and digestion of prey. This also provides defense against threats. Snake venom is injected by unique fangs during a bite, whereas some species are also able to spit venom.
Crotalus scutulatus is a highly venomous pit viper species found in the deserts of the southwestern United States and central Mexico. It is perhaps best known for its potent neurotoxic-hemotoxic venom, which is considered the world's most potent rattlesnake venom.
Disintegrins are a family of small proteins from viper venoms that function as potent inhibitors of both platelet aggregation and integrin-dependent cell adhesion.
The eastern diamondback rattlesnake is a species of pit viper in the family Viperidae. The species is endemic to the Southeastern United States. It is one of the heaviest venomous snakes in the Americas and the largest rattlesnake. No subspecies are recognized.
Convulxin is a snake venom toxin found in a tropical rattlesnake known as Crotalus durissus terrificus. It belongs to the family of hemotoxins, which destroy red blood cells or, as is the case with convulxin, induce blood coagulation.
The western diamondback rattlesnake or Texas diamond-back is a rattlesnake species and member of the viper family, found in the southwestern United States and Mexico. Like all other rattlesnakes and all other vipers, it is venomous. It is likely responsible for the majority of snakebite fatalities in northern Mexico and the greatest number of snakebites in the U.S. No subspecies are currently recognized.
Adamalysin is an enzyme. This enzyme catalyses the following chemical reaction
Crotamine is a toxin present in the venom of the South American rattlesnake. It is a 42-residue long protein containing 11 basic residues and 6 cysteines. It has also been isolated from the venom of North American prairie rattlesnake, Crotalus viridis viridis. It was first isolated and purified by Brazilian scientist José Moura Gonçalves, and later intensively studied by his group of collaborators at the Medical School of Ribeirão Preto of the University of São Paulo.
Venombin A is an enzyme. This enzyme catalyses the following chemical reaction
Atrolysin A is an enzyme that is one of six hemorrhagic toxins found in the venom of western diamondback rattlesnake. This endopeptidase has a length of 419 amino acid residues. The metalloproteinase disintegrin-like domain and the cysteine-rich domain of the enzyme are responsible for the enzyme's hemorrhagic effects on organisms via inhibition of platelet aggregation.
Bothropasin is an enzyme. This enzyme catalyses the following chemical reaction
Atrolysin B is an enzyme. This enzyme catalyses the following chemical reaction
Atrolysin C is an enzyme. This enzyme catalyses the following chemical reaction
Atroxase is an enzyme. This enzyme catalyses the following chemical reaction
Atrolysin F is an enzyme. This enzyme catalyses the following chemical reaction
Horrilysin is an enzyme. This enzyme catalyses the following chemical reaction
Ruberlysin is an enzyme. This enzyme catalyses the following chemical reaction
Trimerelysin II is an enzyme. This enzyme catalyses the following chemical reaction
Fibrolase is an enzyme. This enzyme catalyses the following chemical reaction
References
- ↑ Bjarnason JB, Tu AT (August 1978). "Hemorrhagic toxins from Western diamondback rattlesnake (Crotalus atrox) venom: isolation and characterization of five toxins and the role of zinc in hemorrhagic toxin e". Biochemistry. 17 (16): 3395–404. doi:10.1021/bi00609a033. PMID 210790.
- ↑ Bjarnason JB, Fox JW (August 1983). "Proteolytic specificity and cobalt exchange of hemorrhagic toxin e, a zinc protease isolated from the venom of the western diamondback rattlesnake (Crotalus atrox)". Biochemistry. 22 (16): 3770–8. doi:10.1021/bi00285a009. PMID 6351911.
- ↑ Baramova EN, Shannon JD, Bjarnason JB, Fox JW (May 1990). "Identification of the cleavage sites by a hemorrhagic metalloproteinase in type IV collagen". Matrix. 10 (2): 91–7. doi:10.1016/s0934-8832(11)80175-7. PMID 2374521.
